package com.atguigu.gulimall.ware.config;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

/**
 * 配置RabbitMq的序列化方式为JSON
 */
@Configuration
public class MyRabbitConfig {
    @Bean
    public MessageConverter messageConverter(){

        return new Jackson2JsonMessageConverter();
    }

    @RabbitListener(queues = {"stock.release.stock.queue"})
    public void listener(Message message){
        //我们什么也不做
    }

    @Bean
    public Exchange stockEventExchange(){
        /**
         * TopicExchange(String name,
         *              boolean durable,
         *              boolean autoDelete,
         *              Map<String, Object> arguments)
         */
        TopicExchange topicExchange = new TopicExchange("stock-event-exchange",true,false);
        return topicExchange;
    }

    @Bean
    public Queue stockReleaseStockQueue(){
        /**
         * Queue(   String name,
         *          boolean durable,
         *          boolean exclusive, 我们填写false:很多人都能连接，但谁抢到算谁的
         *          boolean autoDelete,
         *          @Nullable Map<String, Object> arguments)
         */
        Queue queue = new Queue("stock.release.stock.queue",true,false,false,null);
        return queue;
    }

    @Bean
    public Queue stockDelayQueue(){
        /**
         * Queue(   String name,
         *          boolean durable,
         *          boolean exclusive, 我们填写false:很多人都能连接，但谁抢到算谁的
         *          boolean autoDelete,
         *          @Nullable Map<String, Object> arguments)
         */
        Map<String, Object> arguments = new HashMap<>();
        arguments.put("x-dead-letter-exchange","stock-event-exchange");
        arguments.put("x-dead-letter-routing-key","stock.release");
        arguments.put("x-message-ttl",60000);
        Queue queue = new Queue("stock.delay.queue",true,false,false,arguments);
        return queue;
    }

    @Bean
    public Binding stockReleaseBinding(){
        /**
         * Binding( String destination,
         *          DestinationType destinationType,
         *          String exchange,
         *          String routingKey,
         *          @Nullable Map<String, Object> arguments)
         */
        Binding binding = new Binding("stock.release.stock.queue",
                                                Binding.DestinationType.QUEUE,
                                        "stock-event-exchange",
                                        "stock.release.#",
                                        null);
        return binding;
    }

    @Bean
    public Binding stockLockedBinding(){
        /**
         * Binding( String destination,
         *          DestinationType destinationType,
         *          String exchange,
         *          String routingKey,
         *          @Nullable Map<String, Object> arguments)
         */
        Binding binding = new Binding("stock.delay.queue",
                Binding.DestinationType.QUEUE,
                "stock-event-exchange",
                "stock.locked",
                null);
        return binding;
    }

}
